Low ratio steering boxes
If you used 73 -76 two piece strut rod bushings with sleeve and installed them with original 67-72 strut rods you moved the lower control arms back . This will through the geometry off. Just a thought you may have done not knowing
Early strut rods are fine thread at the bushing. Later strut rods are coarse thread at the bushing. The lengths are different. Bushings are different.